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config: limit the size for env files

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Signed-off-by: Nicola Murino <nicola.murino@gmail.com>
This commit is contained in:
Nicola Murino 2023-05-25 05:25:28 +02:00
parent f8f8962ccb
commit e11473cf52
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GPG key ID: 935D2952DEC4EECF
4 changed files with 15 additions and 3 deletions
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2
go.mod
View file

@ -160,7 +160,7 @@ require (
golang.org/x/tools v0.9.1 // indirect
golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2 // indirect
google.golang.org/appengine v1.6.7 // indirect
google.golang.org/genproto v0.0.0-20230410155749-daa745c078e1 // indirect
google.golang.org/genproto v0.0.0-20230524185152-1884fd1fac28 // indirect
google.golang.org/grpc v1.55.0 // indirect
google.golang.org/protobuf v1.30.0 // indirect
gopkg.in/ini.v1 v1.67.0 // indirect

4
go.sum
View file

@ -2816,8 +2816,8 @@ google.golang.org/genproto v0.0.0-20230113154510-dbe35b8444a5/go.mod h1:RGgjbofJ
google.golang.org/genproto v0.0.0-20230124163310-31e0e69b6fc2/go.mod h1:RGgjbofJ8xD9Sq1VVhDM1Vok1vRONV+rg+CjzG4SZKM=
google.golang.org/genproto v0.0.0-20230125152338-dcaf20b6aeaa/go.mod h1:RGgjbofJ8xD9Sq1VVhDM1Vok1vRONV+rg+CjzG4SZKM=
google.golang.org/genproto v0.0.0-20230209215440-0dfe4f8abfcc/go.mod h1:RGgjbofJ8xD9Sq1VVhDM1Vok1vRONV+rg+CjzG4SZKM=
google.golang.org/genproto v0.0.0-20230410155749-daa745c078e1 h1:KpwkzHKEF7B9Zxg18WzOa7djJ+Ha5DzthMyZYQfEn2A=
google.golang.org/genproto v0.0.0-20230410155749-daa745c078e1/go.mod h1:nKE/iIaLqn2bQwXBg8f1g2Ylh6r5MN5CmZvuzZCgsCU=
google.golang.org/genproto v0.0.0-20230524185152-1884fd1fac28 h1:+55/MuGJORMxCrkAgo2595fMAnN/4rweCuwibbqrvpc=
google.golang.org/genproto v0.0.0-20230524185152-1884fd1fac28/go.mod h1:nKE/iIaLqn2bQwXBg8f1g2Ylh6r5MN5CmZvuzZCgsCU=
google.golang.org/grpc v0.0.0-20160317175043-d3ddb4469d5a/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw=
google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=

5
internal/config/config.go
View file

@ -53,6 +53,7 @@ const (
configName = "sftpgo"
// ConfigEnvPrefix defines a prefix that environment variables will use
configEnvPrefix = "sftpgo"
envFileMaxSize = 1048576
)
var (
@ -654,6 +655,10 @@ func readEnvFiles(configDir string) {
info, err := entry.Info()
if err == nil && info.Mode().IsRegular() {
envFile := filepath.Join(envd, entry.Name())
if info.Size() > envFileMaxSize {
logger.Info(logSender, "", "env file %q too big: %s, skipping", entry.Name(), util.ByteCountIEC(info.Size()))
continue
}
err = gotenv.Load(envFile)
if err != nil {
logger.Error(logSender, "", "unable to load env vars from file %q, err: %v", envFile, err)

7
internal/config/config_test.go
View file

@ -15,6 +15,7 @@
package config_test
import (
"crypto/rand"
"encoding/json"
"os"
"path/filepath"
@ -101,10 +102,16 @@ func TestReadEnvFiles(t *testing.T) {
err := os.Mkdir(envd, os.ModePerm)
assert.NoError(t, err)
content := make([]byte, 1048576+1)
_, err = rand.Read(content)
assert.NoError(t, err)
err = os.WriteFile(filepath.Join(envd, "env1"), []byte("SFTPGO_SFTPD__MAX_AUTH_TRIES = 10"), 0666)
assert.NoError(t, err)
err = os.WriteFile(filepath.Join(envd, "env2"), []byte(`{"invalid env": "value"}`), 0666)
assert.NoError(t, err)
err = os.WriteFile(filepath.Join(envd, "env3"), content, 0666)
assert.NoError(t, err)
err = config.LoadConfig(configDir, "")
assert.NoError(t, err)